[PATCH 5/5] drm/simpledrm: Synchronize access to GEM BOs

[Javier Martinez Canillas]

On 9/22/22 15:09, Thomas Zimmermann wrote:
> Synchronize CPU access to GEM BOs with other drivers when updating the
> screen buffer. Imported buffers might otherwise contain stale data.
>

Can you please elaborate what the problem is? The framebuffers memory is
setup by the firmware and would never come from an imported dma-buf, so
could the GEM BOs even be shared with other drivers?

Or is this done just for the sake of correctness ?
 
> Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
> ---

The change looks good to me though if is for the latter.

Reviewed-by: Javier Martinez Canillas <javierm at redhat.com>

-- 
Best regards,

Javier Martinez Canillas
Core Platforms
Red Hat